JavaScript Discussion Boards

SadiqMohammed6-Nov-12 23:48

6-Nov-12 23:48

Hi,
I have a scenario where I have to enter a date in a text box in MM/DD/YYYY format and there is another text box where the value should be filled by itself and the value must be exactly one month from the entered date i.e, if my value in the first text box is 05/07/2012 second text box should automatically possess 05/08/2012 and this should be done by javascript, below is the code I tried but the second text box is taking the same value as the first text box, can someone please help me out with this issue and tell me what's wrong with the code

function populateArchiveDate() {
var frm=document.form1

if (validateDateFormat(frm.story_intro_date) && frm.story_exp_date.disabled == false) {

var post_date = new Date(frm.story_intro_date.value);
alert(post_date.getMonth());
var expiration_date = new Date(post_date.setMonth(post_date.getMonth() + 1));
alert(expiration_date.getMonth());

if (expiration_date.getMonth() == 0)
expiration_date = expiration_date.getMonth() + 1 + "/" + expiration_date.getDate() + "/" + expiration_date.getFullYear();
else
expiration_date = expiration_date.getMonth() + "/" + expiration_date.getDate() + "/" + expiration_date.getFullYear();

frm.story_exp_date.value = expiration_date;
frm.hdn_story_exp_date.value = expiration_date;

Thanks in advance Smile | :)

Re: Adding a month to the current date

Richard Deeming7-Nov-12 2:00

Richard Deeming

7-Nov-12 2:00

SadiqMohammed wrote:
if (expiration_date.getMonth() == 0)
expiration_date = expiration_date.getMonth() + 1 + "/" + expiration_date.getDate() + "/" + expiration_date.getFullYear();
else
expiration_date = expiration_date.getMonth() + "/" + expiration_date.getDate() + "/" + expiration_date.getFullYear();

There's your problem - in Javascript, months run from 0 to 11, not 1 to 12. If the new date is in January, you're setting the result correctly; otherwise, you're setting it to the previous month.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: Adding a month to the current date

SadiqMohammed7-Nov-12 18:31

SadiqMohammed

7-Nov-12 18:31

@Richard : I changed it and considering that Javascript takes month index as 0 to 11 but now when I enter the date as 01/31/2012 the value in the next text box is 04/01/2012 but for rest of the months I'm getting the desired solution

All Izzz Wellll

Re: Adding a month to the current date

Richard Deeming8-Nov-12 2:11

Richard Deeming

8-Nov-12 2:11

I don't know how you've managed to get 1^st April; with the code below, I get 2^nd March:

var post_date = new Date(2012, 0, 31);
var expiration_date = new Date(post_date.setMonth(post_date.getMonth() + 1));
expiration_date = expiration_date.getMonth() + 1 + "/" + expiration_date.getDate() + "/" + expiration_date.getFullYear();
alert(expiration_date);

The reason it's 2^nd March is that there is no 31^st February. If you want the expiration_date to always be a date within the following month, you'll need to check that manually:

var post_date = new Date(2012, 0, 31);

var firstOfMonth = new Date(post_date);
firstOfMonth.setDate(1);
firstOfMonth.setMonth(post_date.getMonth() + 1);

var expiration_date = new Date(firstOfMonth);
expiration_date.setDate(post_date.getDate());

while (expiration_date.getMonth() != firstOfMonth.getMonth())
{
    expiration_date.setDate(expiration_date.getDate() - 1);
}

expiration_date = expiration_date.getMonth() + 1 + "/" + expiration_date.getDate() + "/" + expiration_date.getFullYear();
alert(expiration_date);

Alternatively, you could look at the Datejs library[^].

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: Adding a month to the current date

SadiqMohammed8-Nov-12 19:08

SadiqMohammed

8-Nov-12 19:08

Hi Richard,
Thanks for the suggestion Smile | :)

I solved the problem and I'm getting the desired result, I faced a problem only for the month of November i.e, 11th month but I resolved it using the following code with the help of a if block
function populateArchive() {
var frm=document.form1;
var input;
var monthVal;
var monthMax = new Array(31,31,29,31,30,31,30,31,31,30,31,30,31);
var top ;

if (validateDateFormat(frm.story_intro_date) && frm.story_exp_date.disabled == false) {

var post_date = new Date(frm.story_intro_date.value);
var expiration_date = new Date(post_date.setMonth(post_date.getMonth() ));
var new_date = expiration_date.getDate();
var new_month = expiration_date.getMonth()+ 2;
var new_year = expiration_date.getFullYear();
if (new_month == 13) {
new_month = new_month - 12;
new_year = new_year + 1;
}
input = parseInt(new_date, 10);
monthVal = new_month;
top = monthMax[monthVal];
if (!inRange(input, 1, top)) {
expiration_date_new = new_month + "/" + top + "/" + new_year;
}
else
expiration_date_new = new_month + "/" + new_date + "/" + new_year;
frm.story_exp_date.value = expiration_date_new;
frm.hdn_story_exp_date.value = expiration_date_new;
}

}

thanks for ur suggestions once again

Re: Adding a month to the current date

deepak.m.shrma19-Nov-12 18:07

deepak.m.shrma

19-Nov-12 18:07

try this code its working well.

JavaScript

$(function () {
$('#date2').focus(function () {
	            var istDateVal = $("#date1").val().split("/");
	            var istDate = new Date();
	            istDate.setFullYear(istDateVal[2], istDateVal[1] - 1, istDateVal[0]);
	            istDate.setMonth(istDate.getMonth() - 1);
	            $('#date2').val(istDate.getDate() + "/" + (istDate.getMonth() + 1) + "/" + istDate.getFullYear())
	        });
});

Re: Adding a month to the current date

Peter_in_278019-Nov-12 18:58

Peter_in_2780

19-Nov-12 18:58

... and in December, what happens?

Peter

Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012

Re: Adding a month to the current date

deepak.m.shrma19-Nov-12 19:52

deepak.m.shrma

19-Nov-12 19:52

I didnt get you bro. what is your concern. Will you elaborate it. Smile | :)

deepak.m.shrma

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